Not listed COMPARISON OF GROUND-BASED MAX-DOAS AND SATELLITE TRACE GAS AND AEROSOL RETRIEVALSDIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY (DOAS) UNDERLIES MANY OPTICAL REMOTE SENSING TECHNIQUES BOTH FROM SATELLITE-BASED AND GROUND-BASED INSTRUMENTATION. GROUND-BASED INSTRUMENTS CAN PROVIDE HIGHLY COMPLEMENTARY INFORMATION TO SATELLITE-BASED INSTRUMENTS THAT WILL ASSIST IN IMPROVING SATELLITE DATA PROCESSING ALGORITHMS AND VALIDATION OF SATELLITE DATA PRODUCTS. NEAR-FUTURE SATELLITE MEASUREMENTS OF TRACE GASES AND AEROSOLS WILL SHIFT FROM LOW EARTH ORBIT (LEO) PLATFORMS TO GEOSTATIONARY (GEO) PLATFORMS ALLOWING ENHANCED SPATIAL AND TEMPORAL RESOLUTION. HOWEVER THE SHIFT FROM LEO TO GEO WILL BE A CHALLENGE FOR SATELLITE PROCESSING ALGORITHMS BECAUSE EFFECTS LIKE THE DIURNAL EVOLUTION OF THE BOUNDARY LAYER STRUCTURE WILL NEED TO BE TAKEN INTO ACCOUNT MORE FULLY. THEREFORE GROUND-BASED DOAS IS UNIQUELY POSITIONED TO ASSIST IN MAKING THE TRANSITION FROM LEO TO GEO SATELLITE OBSERVATIONS. A KEY AREA NEEDING CONSIDERATION IS THAT OF THE GROUND S ALBEDO AND AEROSOL SCATTERING BECAUSE ENHANCED GROUND REFLECTIVITY RESULTS IN ENHANCED SENSITIVITY TO BOUNDARY-LAYER GASES AND HIGH LATITUDE REGIONS COMMONLY HAVE HIGH ALBEDO SURFACES (SNOW AND ICE). ADDITIONALLY HIGH ALBEDO SURFACES ARE OFTEN INTERPRETED AS CLOUDS IN COMMON SATELLITE REMOTE SENSING PRODUCTS AFFECTING CLOUD STATISTICS AND HIGHER ORDER PRODUCTS. IN THIS PROJECT WE PROPOSE TO ANALYZE ARCTIC REGION MAX-DOAS DATA DETECTED BY A NETWORK OF GROUND-BASED INSTRUMENTS AND COMPARE THE RESULTING TRACE GAS AND AEROSOL PROPERTIES TO SATELLITE-DETECTED PRODUCTS. THE GROUNDBASED MEASUREMENTS COME FROM THE NSF-FUNDED ARCTIC OBSERVING NETWORK O-BUOY NETWORK THAT DEPLOYED 15 AUTONOMOUS INSTRUMENT PACKAGES (O- BUOYS) FROM 2009 2016 AS WELL AS LONG-TERM MEASUREMENTS FROM A FIXED SITE AT BARROW ALASKA AND SHORT-TERM DEPLOYMENTS OF ICELANDERS DURING THE NASA BROMEX CAMPAIGN IN SPRING 2012. IN TOTAL THIS DATA SET HAS MORE THAN 160 000 VERTICAL PROFILES AND MORE THAN HALF A MILLION INDIVIDUAL SPECTRA LEADING TO A COMPREHENSIVE DATA SET OF HIGH-LATITUDE DATA. THE MAX-DOAS INSTRUMENTS IN THIS NETWORK ROUTINELY OBSERVE TROPOSPHERIC BROMINE MONOXIDE (BRO) A BOUNDARY-LAYER TRACE GAS AS WELL AS AEROSOL OPTICAL PROPERTIES SUCH AS THE TROPOSPHERIC AEROSOL OPTICAL DEPTH (AOD) AND THE VERTICAL PROFILE OF AEROSOL EXTINCTION. SPECIFICALLY WE PROPOSE TO: INTER-COMPARE THE O-BUOY DOAS INSTRUMENT WITH THE PANDORA NETWORK THROUGH A 6-WEEK CAMPAIGN IN THE WASHINGTON DC AREA. COMPARE BRO TROPOSPHERIC VCD FROM O-BUOYS AND BARROW TO OMI-DETECTED BRO TROPOSOPHERIC VCD (OMBRO CORRECTED FOR STRATOSPHERIC CONTRIBUTION). COMPARE AOD FROM O-BUOYS AND BARROW TO OMI-DETECTED AOD (OMAERO). EXPLORE CORRELATION OF CALIPSO/CALIOP LIDAR DATA WITH VERTICAL PROFILES OF AEROSOL / CLOUD EXTINCTION MEASURED BY O-BUOYS AND AT BARROW. EACH COMPARISON WILL BE MADE WITH CONSIDERATION OF ALBEDO AND AEROSOL / CLOUD PROPERTIES TO DETERMINE AND THE ROLE OF HIGH-ALBEDO SURFACES WHICH ARE COMMON IN THE ARCTIC REGION AND CLOUD SCREENING EFFECTS. THE END PRODUCT OF THIS PROJECT WILL BE A BETTER UNDERSTANDING OF COMPARISON BETWEEN GROUND-BASED AND SATELLITE-BASED TRACE GAS (BRO) AND AEROSOL (AOD AND PROFILE) PROPERTIES THAT CAN ASSIST IN MAKING THE TRANSITION BETWEEN LEO AND GEO SATELLITE PLATFORMS. ($79) 2/12/20 3 COMPARISON OF GROUND-BASED MAX-DOAS AND SATELLITE TRACE GAS AND AEROSOL RETRIEVALS DIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY (DOAS) UNDERLIES MANY OPTICAL REMOTE SENSING TECHNIQUES, BOTH FROM SATELLITE-BASED AND GROUND-BASED INSTRUMENTATION. GROUND-BASED INSTRUMENTS CAN PROVIDE HIGHLY COMPLEMENTARY INFORMATION TO SATELLITE-BASED INSTRUMENTS THAT WILL ASSIST IN IMPROVING SATELLITE DATA PROCESSING ALGORITHMS, AND VALIDATION OF SATELLITE DATA PRODUCTS. NEAR-FUTURE SATELLITE MEASUREMENTS OF TRACE GASES AND AEROSOLS WILL SHIFT FROM LOW EARTH ORBIT (LEO) PLATFORMS TO GEOSTATIONARY (GEO) PLATFORMS, ALLOWING ENHANCED SPATIAL AND TEMPORAL RESOLUTION. HOWEVER, THE SHIFT FROM LEO TO GEO WILL BE A CHALLENGE FOR SATELLITE PROCESSING ALGORITHMS BECAUSE EFFECTS LIKE THE DIURNAL EVOLUTION OF THE BOUNDARY LAYER STRUCTURE WILL NEED TO BE TAKEN INTO ACCOUNT MORE FULLY. THEREFORE, GROUND-BASED DOAS IS UNIQUELY POSITIONED TO ASSIST IN MAKING THE TRANSITION FROM LEO TO GEO SATELLITE OBSERVATIONS. A KEY AREA NEEDING CONSIDERATION IS THAT OF THE GROUND S ALBEDO AND AEROSOL SCATTERING BECAUSE ENHANCED GROUND REFLECTIVITY RESULTS IN ENHANCED SENSITIVITY TO BOUNDARY-LAYER GASES, AND HIGH LATITUDE REGIONS COMMONLY HAVE HIGH ALBEDO SURFACES (SNOW AND ICE). ADDITIONALLY, HIGH ALBEDO SURFACES ARE OFTEN INTERPRETED AS CLOUDS IN COMMON SATELLITE REMOTE SENSING PRODUCTS, AFFECTING CLOUD STATISTICS AND HIGHER ORDER PRODUCTS. IN THIS PROJECT, WE PROPOSE TO ANALYZE ARCTIC REGION MAX-DOAS DATA DETECTED BY A NETWORK OF GROUND-BASED INSTRUMENTS AND COMPARE THE RESULTING TRACE GAS AND AEROSOL PROPERTIES TO SATELLITE-DETECTED PRODUCTS. THE GROUNDBASED MEASUREMENTS COME FROM THE NSF-FUNDED ARCTIC OBSERVING NETWORK O-BUOY NETWORK THAT DEPLOYED 15 AUTONOMOUS INSTRUMENT PACKAGES (O- BUOYS) FROM 2009 2016 AS WELL AS LONG-TERM MEASUREMENTS FROM A FIXED SITE AT BARROW, ALASKA AND SHORT-TERM DEPLOYMENTS OF ICELANDERS DURING THE NASA BROMEX CAMPAIGN IN SPRING 2012. IN TOTAL THIS DATA SET HAS MORE THAN 160,000 VERTICAL PROFILES AND MORE THAN HALF A MILLION INDIVIDUAL SPECTRA, LEADING TO A COMPREHENSIVE DATA SET OF HIGH-LATITUDE DATA. THE MAX-DOAS INSTRUMENTS IN THIS NETWORK ROUTINELY OBSERVE TROPOSPHERIC BROMINE MONOXIDE (BRO), A BOUNDARY-LAYER TRACE GAS AS WELL AS AEROSOL OPTICAL PROPERTIES SUCH AS THE TROPOSPHERIC AEROSOL OPTICAL DEPTH (AOD) AND THE VERTICAL PROFILE OF AEROSOL EXTINCTION. SPECIFICALLY, WE PROPOSE TO: INTER-COMPARE THE O-BUOY DOAS INSTRUMENT WITH THE PANDORA NETWORK THROUGH A 6-WEEK CAMPAIGN IN THE WASHINGTON DC AREA. COMPARE BRO TROPOSPHERIC VCD FROM O-BUOYS AND BARROW TO OMI-DETECTED BRO TROPOSOPHERIC VCD (OMBRO CORRECTED FOR STRATOSPHERIC CONTRIBUTION). COMPARE AOD FROM O-BUOYS AND BARROW TO OMI-DETECTED AOD (OMAERO). EXPLORE CORRELATION OF CALIPSO/CALIOP LIDAR DATA WITH VERTICAL PROFILES OF AEROSOL / CLOUD EXTINCTION MEASURED BY O-BUOYS AND AT BARROW. EACH COMPARISON WILL BE MADE WITH CONSIDERATION OF ALBEDO AND AEROSOL / CLOUD PROPERTIES TO DETERMINE AND THE ROLE OF HIGH-ALBEDO SURFACES, WHICH ARE COMMON IN THE ARCTIC REGION, AND CLOUD SCREENING EFFECTS. THE END PRODUCT OF THIS PROJECT WILL BE A BETTER UNDERSTANDING OF COMPARISON BETWEEN GROUND-BASED AND SATELLITE-BASED TRACE GAS (BRO) AND AEROSOL (AOD AND PROFILE) PROPERTIES THAT CAN ASSIST IN MAKING THE TRANSITION BETWEEN LEO AND GEO SATELLITE PLATFORMS. Funding Only Action ($79) 2/12/20 Not listed COMPARISON OF GROUND-BASED MAX-DOAS AND SATELLITE TRACE GAS AND AEROSOL RETRIEVALSDIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY (DOAS) UNDERLIES MANY OPTICAL REMOTE SENSING TECHNIQUES BOTH FROM SATELLITE-BASED AND GROUND-BASED INSTRUMENTATION. GROUND-BASED INSTRUMENTS CAN PROVIDE HIGHLY COMPLEMENTARY INFORMATION TO SATELLITE-BASED INSTRUMENTS THAT WILL ASSIST IN IMPROVING SATELLITE DATA PROCESSING ALGORITHMS AND VALIDATION OF SATELLITE DATA PRODUCTS. NEAR-FUTURE SATELLITE MEASUREMENTS OF TRACE GASES AND AEROSOLS WILL SHIFT FROM LOW EARTH ORBIT (LEO) PLATFORMS TO GEOSTATIONARY (GEO) PLATFORMS ALLOWING ENHANCED SPATIAL AND TEMPORAL RESOLUTION. HOWEVER THE SHIFT FROM LEO TO GEO WILL BE A CHALLENGE FOR SATELLITE PROCESSING ALGORITHMS BECAUSE EFFECTS LIKE THE DIURNAL EVOLUTION OF THE BOUNDARY LAYER STRUCTURE WILL NEED TO BE TAKEN INTO ACCOUNT MORE FULLY. THEREFORE GROUND-BASED DOAS IS UNIQUELY POSITIONED TO ASSIST IN MAKING THE TRANSITION FROM LEO TO GEO SATELLITE OBSERVATIONS. A KEY AREA NEEDING CONSIDERATION IS THAT OF THE GROUND S ALBEDO AND AEROSOL SCATTERING BECAUSE ENHANCED GROUND REFLECTIVITY RESULTS IN ENHANCED SENSITIVITY TO BOUNDARY-LAYER GASES AND HIGH LATITUDE REGIONS COMMONLY HAVE HIGH ALBEDO SURFACES (SNOW AND ICE). ADDITIONALLY HIGH ALBEDO SURFACES ARE OFTEN INTERPRETED AS CLOUDS IN COMMON SATELLITE REMOTE SENSING PRODUCTS AFFECTING CLOUD STATISTICS AND HIGHER ORDER PRODUCTS. IN THIS PROJECT WE PROPOSE TO ANALYZE ARCTIC REGION MAX-DOAS DATA DETECTED BY A NETWORK OF GROUND-BASED INSTRUMENTS AND COMPARE THE RESULTING TRACE GAS AND AEROSOL PROPERTIES TO SATELLITE-DETECTED PRODUCTS. THE GROUNDBASED MEASUREMENTS COME FROM THE NSF-FUNDED ARCTIC OBSERVING NETWORK O-BUOY NETWORK THAT DEPLOYED 15 AUTONOMOUS INSTRUMENT PACKAGES (O- BUOYS) FROM 2009 2016 AS WELL AS LONG-TERM MEASUREMENTS FROM A FIXED SITE AT BARROW ALASKA AND SHORT-TERM DEPLOYMENTS OF ICELANDERS DURING THE NASA BROMEX CAMPAIGN IN SPRING 2012. IN TOTAL THIS DATA SET HAS MORE THAN 160 000 VERTICAL PROFILES AND MORE THAN HALF A MILLION INDIVIDUAL SPECTRA LEADING TO A COMPREHENSIVE DATA SET OF HIGH-LATITUDE DATA. THE MAX-DOAS INSTRUMENTS IN THIS NETWORK ROUTINELY OBSERVE TROPOSPHERIC BROMINE MONOXIDE (BRO) A BOUNDARY-LAYER TRACE GAS AS WELL AS AEROSOL OPTICAL PROPERTIES SUCH AS THE TROPOSPHERIC AEROSOL OPTICAL DEPTH (AOD) AND THE VERTICAL PROFILE OF AEROSOL EXTINCTION. SPECIFICALLY WE PROPOSE TO: INTER-COMPARE THE O-BUOY DOAS INSTRUMENT WITH THE PANDORA NETWORK THROUGH A 6-WEEK CAMPAIGN IN THE WASHINGTON DC AREA. COMPARE BRO TROPOSPHERIC VCD FROM O-BUOYS AND BARROW TO OMI-DETECTED BRO TROPOSOPHERIC VCD (OMBRO CORRECTED FOR STRATOSPHERIC CONTRIBUTION). COMPARE AOD FROM O-BUOYS AND BARROW TO OMI-DETECTED AOD (OMAERO). EXPLORE CORRELATION OF CALIPSO/CALIOP LIDAR DATA WITH VERTICAL PROFILES OF AEROSOL / CLOUD EXTINCTION MEASURED BY O-BUOYS AND AT BARROW. EACH COMPARISON WILL BE MADE WITH CONSIDERATION OF ALBEDO AND AEROSOL / CLOUD PROPERTIES TO DETERMINE AND THE ROLE OF HIGH-ALBEDO SURFACES WHICH ARE COMMON IN THE ARCTIC REGION AND CLOUD SCREENING EFFECTS. THE END PRODUCT OF THIS PROJECT WILL BE A BETTER UNDERSTANDING OF COMPARISON BETWEEN GROUND-BASED AND SATELLITE-BASED TRACE GAS (BRO) AND AEROSOL (AOD AND PROFILE) PROPERTIES THAT CAN ASSIST IN MAKING THE TRANSITION BETWEEN LEO AND GEO SATELLITE PLATFORMS. $0 9/21/18 2 COMPARISON OF GROUND-BASED MAX-DOAS AND SATELLITE TRACE GAS AND AEROSOL RETRIEVALS DIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY (DOAS) UNDERLIES MANY OPTICAL REMOTE SENSING TECHNIQUES, BOTH FROM SATELLITE-BASED AND GROUND-BASED INSTRUMENTATION. GROUND-BASED INSTRUMENTS CAN PROVIDE HIGHLY COMPLEMENTARY INFORMATION TO SATELLITE-BASED INSTRUMENTS THAT WILL ASSIST IN IMPROVING SATELLITE DATA PROCESSING ALGORITHMS, AND VALIDATION OF SATELLITE DATA PRODUCTS. NEAR-FUTURE SATELLITE MEASUREMENTS OF TRACE GASES AND AEROSOLS WILL SHIFT FROM LOW EARTH ORBIT (LEO) PLATFORMS TO GEOSTATIONARY (GEO) PLATFORMS, ALLOWING ENHANCED SPATIAL AND TEMPORAL RESOLUTION. HOWEVER, THE SHIFT FROM LEO TO GEO WILL BE A CHALLENGE FOR SATELLITE PROCESSING ALGORITHMS BECAUSE EFFECTS LIKE THE DIURNAL EVOLUTION OF THE BOUNDARY LAYER STRUCTURE WILL NEED TO BE TAKEN INTO ACCOUNT MORE FULLY. THEREFORE, GROUND-BASED DOAS IS UNIQUELY POSITIONED TO ASSIST IN MAKING THE TRANSITION FROM LEO TO GEO SATELLITE OBSERVATIONS. A KEY AREA NEEDING CONSIDERATION IS THAT OF THE GROUND S ALBEDO AND AEROSOL SCATTERING BECAUSE ENHANCED GROUND REFLECTIVITY RESULTS IN ENHANCED SENSITIVITY TO BOUNDARY-LAYER GASES, AND HIGH LATITUDE REGIONS COMMONLY HAVE HIGH ALBEDO SURFACES (SNOW AND ICE). ADDITIONALLY, HIGH ALBEDO SURFACES ARE OFTEN INTERPRETED AS CLOUDS IN COMMON SATELLITE REMOTE SENSING PRODUCTS, AFFECTING CLOUD STATISTICS AND HIGHER ORDER PRODUCTS. IN THIS PROJECT, WE PROPOSE TO ANALYZE ARCTIC REGION MAX-DOAS DATA DETECTED BY A NETWORK OF GROUND-BASED INSTRUMENTS AND COMPARE THE RESULTING TRACE GAS AND AEROSOL PROPERTIES TO SATELLITE-DETECTED PRODUCTS. THE GROUNDBASED MEASUREMENTS COME FROM THE NSF-FUNDED ARCTIC OBSERVING NETWORK O-BUOY NETWORK THAT DEPLOYED 15 AUTONOMOUS INSTRUMENT PACKAGES (O- BUOYS) FROM 2009 2016 AS WELL AS LONG-TERM MEASUREMENTS FROM A FIXED SITE AT BARROW, ALASKA AND SHORT-TERM DEPLOYMENTS OF ICELANDERS DURING THE NASA BROMEX CAMPAIGN IN SPRING 2012. IN TOTAL THIS DATA SET HAS MORE THAN 160,000 VERTICAL PROFILES AND MORE THAN HALF A MILLION INDIVIDUAL SPECTRA, LEADING TO A COMPREHENSIVE DATA SET OF HIGH-LATITUDE DATA. THE MAX-DOAS INSTRUMENTS IN THIS NETWORK ROUTINELY OBSERVE TROPOSPHERIC BROMINE MONOXIDE (BRO), A BOUNDARY-LAYER TRACE GAS AS WELL AS AEROSOL OPTICAL PROPERTIES SUCH AS THE TROPOSPHERIC AEROSOL OPTICAL DEPTH (AOD) AND THE VERTICAL PROFILE OF AEROSOL EXTINCTION. SPECIFICALLY, WE PROPOSE TO: INTER-COMPARE THE O-BUOY DOAS INSTRUMENT WITH THE PANDORA NETWORK THROUGH A 6-WEEK CAMPAIGN IN THE WASHINGTON DC AREA. COMPARE BRO TROPOSPHERIC VCD FROM O-BUOYS AND BARROW TO OMI-DETECTED BRO TROPOSOPHERIC VCD (OMBRO CORRECTED FOR STRATOSPHERIC CONTRIBUTION). COMPARE AOD FROM O-BUOYS AND BARROW TO OMI-DETECTED AOD (OMAERO). EXPLORE CORRELATION OF CALIPSO/CALIOP LIDAR DATA WITH VERTICAL PROFILES OF AEROSOL / CLOUD EXTINCTION MEASURED BY O-BUOYS AND AT BARROW. EACH COMPARISON WILL BE MADE WITH CONSIDERATION OF ALBEDO AND AEROSOL / CLOUD PROPERTIES TO DETERMINE AND THE ROLE OF HIGH-ALBEDO SURFACES, WHICH ARE COMMON IN THE ARCTIC REGION, AND CLOUD SCREENING EFFECTS. THE END PRODUCT OF THIS PROJECT WILL BE A BETTER UNDERSTANDING OF COMPARISON BETWEEN GROUND-BASED AND SATELLITE-BASED TRACE GAS (BRO) AND AEROSOL (AOD AND PROFILE) PROPERTIES THAT CAN ASSIST IN MAKING THE TRANSITION BETWEEN LEO AND GEO SATELLITE PLATFORMS. Other Administrative Action $0 9/21/18 1 COMPARISON OF GROUND-BASED MAX-DOAS AND SATELLITE TRACE GAS AND AEROSOL RETRIEVALS DIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY (DOAS) UNDERLIES MANY OPTICAL REMOTE SENSING TECHNIQUES, BOTH FROM SATELLITE-BASED AND GROUND-BASED INSTRUMENTATION. GROUND-BASED INSTRUMENTS CAN PROVIDE HIGHLY COMPLEMENTARY INFORMATION TO SATELLITE-BASED INSTRUMENTS THAT WILL ASSIST IN IMPROVING SATELLITE DATA PROCESSING ALGORITHMS, AND VALIDATION OF SATELLITE DATA PRODUCTS. NEAR-FUTURE SATELLITE MEASUREMENTS OF TRACE GASES AND AEROSOLS WILL SHIFT FROM LOW EARTH ORBIT (LEO) PLATFORMS TO GEOSTATIONARY (GEO) PLATFORMS, ALLOWING ENHANCED SPATIAL AND TEMPORAL RESOLUTION. HOWEVER, THE SHIFT FROM LEO TO GEO WILL BE A CHALLENGE FOR SATELLITE PROCESSING ALGORITHMS BECAUSE EFFECTS LIKE THE DIURNAL EVOLUTION OF THE BOUNDARY LAYER STRUCTURE WILL NEED TO BE TAKEN INTO ACCOUNT MORE FULLY. THEREFORE, GROUND-BASED DOAS IS UNIQUELY POSITIONED TO ASSIST IN MAKING THE TRANSITION FROM LEO TO GEO SATELLITE OBSERVATIONS. A KEY AREA NEEDING CONSIDERATION IS THAT OF THE GROUND S ALBEDO AND AEROSOL SCATTERING BECAUSE ENHANCED GROUND REFLECTIVITY RESULTS IN ENHANCED SENSITIVITY TO BOUNDARY-LAYER GASES, AND HIGH LATITUDE REGIONS COMMONLY HAVE HIGH ALBEDO SURFACES (SNOW AND ICE). ADDITIONALLY, HIGH ALBEDO SURFACES ARE OFTEN INTERPRETED AS CLOUDS IN COMMON SATELLITE REMOTE SENSING PRODUCTS, AFFECTING CLOUD STATISTICS AND HIGHER ORDER PRODUCTS. IN THIS PROJECT, WE PROPOSE TO ANALYZE ARCTIC REGION MAX-DOAS DATA DETECTED BY A NETWORK OF GROUND-BASED INSTRUMENTS AND COMPARE THE RESULTING TRACE GAS AND AEROSOL PROPERTIES TO SATELLITE-DETECTED PRODUCTS. THE GROUNDBASED MEASUREMENTS COME FROM THE NSF-FUNDED ARCTIC OBSERVING NETWORK O-BUOY NETWORK THAT DEPLOYED 15 AUTONOMOUS INSTRUMENT PACKAGES (O- BUOYS) FROM 2009 2016 AS WELL AS LONG-TERM MEASUREMENTS FROM A FIXED SITE AT BARROW, ALASKA AND SHORT-TERM DEPLOYMENTS OF ICELANDERS DURING THE NASA BROMEX CAMPAIGN IN SPRING 2012. IN TOTAL THIS DATA SET HAS MORE THAN 160,000 VERTICAL PROFILES AND MORE THAN HALF A MILLION INDIVIDUAL SPECTRA, LEADING TO A COMPREHENSIVE DATA SET OF HIGH-LATITUDE DATA. THE MAX-DOAS INSTRUMENTS IN THIS NETWORK ROUTINELY OBSERVE TROPOSPHERIC BROMINE MONOXIDE (BRO), A BOUNDARY-LAYER TRACE GAS AS WELL AS AEROSOL OPTICAL PROPERTIES SUCH AS THE TROPOSPHERIC AEROSOL OPTICAL DEPTH (AOD) AND THE VERTICAL PROFILE OF AEROSOL EXTINCTION. SPECIFICALLY, WE PROPOSE TO: INTER-COMPARE THE O-BUOY DOAS INSTRUMENT WITH THE PANDORA NETWORK THROUGH A 6-WEEK CAMPAIGN IN THE WASHINGTON DC AREA. COMPARE BRO TROPOSPHERIC VCD FROM O-BUOYS AND BARROW TO OMI-DETECTED BRO TROPOSOPHERIC VCD (OMBRO CORRECTED FOR STRATOSPHERIC CONTRIBUTION). COMPARE AOD FROM O-BUOYS AND BARROW TO OMI-DETECTED AOD (OMAERO). EXPLORE CORRELATION OF CALIPSO/CALIOP LIDAR DATA WITH VERTICAL PROFILES OF AEROSOL / CLOUD EXTINCTION MEASURED BY O-BUOYS AND AT BARROW. EACH COMPARISON WILL BE MADE WITH CONSIDERATION OF ALBEDO AND AEROSOL / CLOUD PROPERTIES TO DETERMINE AND THE ROLE OF HIGH-ALBEDO SURFACES, WHICH ARE COMMON IN THE ARCTIC REGION, AND CLOUD SCREENING EFFECTS. THE END PRODUCT OF THIS PROJECT WILL BE A BETTER UNDERSTANDING OF COMPARISON BETWEEN GROUND-BASED AND SATELLITE-BASED TRACE GAS (BRO) AND AEROSOL (AOD AND PROFILE) PROPERTIES THAT CAN ASSIST IN MAKING THE TRANSITION BETWEEN LEO AND GEO SATELLITE PLATFORMS. Funding Only Action $29.8k 7/14/17